Revert of Move compositor InputHandler from RenderViewImpl to RenderWidget.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index fb43a6a6858af48780dd938f05caaccb2b9b6319..4d031368d5826a9f0996aa158da05c49f1c56fb7 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1348,9 +1348,8 @@
                                     &fullscreen_widget_routing_id)) {
     return nullptr;
   }
-  RenderWidget::ShowCallback show_callback =
-      base::Bind(&RenderViewImpl::ShowCreatedFullscreenWidget,
-                 render_view()->GetWeakPtr());
+  RenderWidget::ShowCallback show_callback = base::Bind(
+      &RenderViewImpl::ShowCreatedFullscreenWidget, render_view()->AsWeakPtr());
 
   RenderWidgetFullscreenPepper* widget = RenderWidgetFullscreenPepper::Create(
       fullscreen_widget_routing_id, show_callback,